First Edition Issued June, 19:22 



Second Edition Issued April, 1928 



Third, Eevised, Edition Issued March, 1934 



Copyright, 1922 and 1928 



BY 



J. FEANK DANIEL 



copyright, 1934 



BY the 



REGENTS OP THE UNIVERSITY OF CALIFORNIA 



sales REPRESENTATIVES 



University of California Press 

 Berkeley, California 



Cambridge University Press 

 London, England 



For orders originating in Great Britain only 



PRINTED IN THE UNITED STATES OF AMERICA 



